<title>WebUploader上传</title>


<body>

<style>
    .uploader h1{
        font-size: 20px;
        margin: 20px 0;
    }
</style>
<!--引入CSS-->
<link rel="stylesheet" type="text/css" href="./static/webuploader/webuploader.css">
<link rel="stylesheet" type="text/css" href="./static/webuploader/image-upload/style.css"/>
<!--引入JS-->
<script type="text/javascript" src="./static/webuploader/webuploader.js"></script>

<main>
    <div class="main uploader">

        <h1>文件上传</h1>
        <div id="wrapper-file">
            <div class="uploader-container">
                <div id="filePicker-file">html5版本</div>
            </div>
            <div id="log">
                <strong>console 会影响 md5 时间的计算，所以在测试 md5 速度的时候，把 console 关了</strong>
            </div>
        </div>


        <br>
        <h1>图片上传</h1>

        <div id="wrapper">
            <div id="container">
                <!--头部，相册选择和格式选择-->
                <div id="uploader">
                    <div class="queueList">
                        <div id="dndArea" class="placeholder">
                            <div id="filePicker"></div>
                            <p>或将照片拖到这里，单次最多可选300张</p>
                        </div>
                    </div>
                    <div class="statusBar" style="display:none;">
                        <div class="progress">
                            <span class="text">0%</span>
                            <span class="percentage"></span>
                        </div>
                        <div class="info"></div>
                        <div class="btns">
                            <div id="filePicker2"></div>
                            <div class="uploadBtn">开始上传</div>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</main>
<script>
(function($) {
    $(function() {
        const log = (function() {
            const dom = $('#log');

            return function(str) {
                dom.append('<p>' + str + '</p>');
            };
        })();

        WebUploader.create({
            pick: '#filePicker-file',
        }).on('fileQueued', function(file) {
            const start = +new Date();

            // 返回的是 promise 对象
            this.md5File(file, 0, 1 * 1024 * 1024)

            // 可以用来监听进度
                .progress(function(percentage) {
                    // console.log('Percentage:', percentage);
                })

            // 处理完成后触发
                .then(function(ret) {
                    // console.log('md5:', ret);

                    const end = +new Date();
                    log('HTML5: md5 ' + file.name + ' cost ' + (end - start) + 'ms get value: ' + ret);
                });
        });
    });
})(jQuery);

(function($) {
    // 当domReady的时候开始初始化
    $(function() {
        const $wrap = $('#uploader');

        // 图片容器
        const $queue = $('<ul class="filelist"></ul>')
            .appendTo($wrap.find('.queueList'));

        // 状态栏，包括进度和控制按钮
        const $statusBar = $wrap.find('.statusBar');

        // 文件总体选择信息。
        const $info = $statusBar.find('.info');

        // 上传按钮
        const $upload = $wrap.find('.uploadBtn');

        // 没选择文件之前的内容。
        const $placeHolder = $wrap.find('.placeholder');

        const $progress = $statusBar.find('.progress').hide();

        // 添加的文件数量
        let fileCount = 0;

        // 添加的文件总大小
        let fileSize = 0;

        // 优化retina, 在retina下这个值是2
        const ratio = window.devicePixelRatio || 1;

        // 缩略图大小
        const thumbnailWidth = 110 * ratio;
        const thumbnailHeight = 110 * ratio;

        // 可能有pedding, ready, uploading, confirm, done.
        let state = 'pedding';

        // 所有文件的进度信息，key为file id
        const percentages = {};
        // 判断浏览器是否支持图片的base64
        const isSupportBase64 = (function() {
            const data = new Image();
            let support = true;
            data.onload = data.onerror = function() {
                if (this.width != 1 || this.height != 1) {
                    support = false;
                }
            };
            data.src = '';
            return support;
        })();

        // 检测是否已经安装flash，检测flash的版本
        const flashVersion = (function() {
            let version;

            try {
                version = navigator.plugins['Shockwave Flash'];
                version = version.description;
            } catch (ex) {
                try {
                    version = new ActiveXObject('ShockwaveFlash.ShockwaveFlash')
                        .GetVariable('$version');
                } catch (ex2) {
                    version = '0.0';
                }
            }
            version = version.match(/\d+/g);
            return parseFloat(version[0] + '.' + version[1], 10);
        })();

        const supportTransition = (function() {
            let s = document.createElement('p').style;
            const r = 'transition' in s ||
                            'WebkitTransition' in s ||
                            'MozTransition' in s ||
                            'msTransition' in s ||
                            'OTransition' in s;
            s = null;
            return r;
        })();

        // WebUploader实例
        let uploader;

        if (!WebUploader.Uploader.support('flash') && WebUploader.browser.ie) {
            // flash 安装了但是版本过低。
            if (flashVersion) {
                (function(container) {
                    window['expressinstallcallback'] = function(state) {
                        switch (state) {
                        case 'Download.Cancelled':
                            alert('您取消了更新！');
                            break;

                        case 'Download.Failed':
                            alert('安装失败');
                            break;

                        default:
                            alert('安装已成功，请刷新！');
                            break;
                        }
                        delete window['expressinstallcallback'];
                    };

                    const swf = './expressInstall.swf';
                    // insert flash object
                    let html = '<object type="application/' +
                            'x-shockwave-flash" data="' + swf + '" ';

                    if (WebUploader.browser.ie) {
                        html += 'classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" ';
                    }

                    html += 'width="100%" height="100%" style="outline:0">' +
                            '<param name="movie" value="' + swf + '" />' +
                            '<param name="wmode" value="transparent" />' +
                            '<param name="allowscriptaccess" value="always" />' +
                            '</object>';

                    container.html(html);
                })($wrap);

                // 压根就没有安转。
            } else {
                $wrap.html('<a href="http://www.adobe.com/go/getflashplayer" target="_blank" border="0"><img alt="get flash player" src="http://www.adobe.com/macromedia/style_guide/images/160x41_Get_Flash_Player.jpg" /></a>');
            }

            return;
        } else if (!WebUploader.Uploader.support()) {
            alert('Web Uploader 不支持您的浏览器！');
            return;
        }

        // 实例化
        uploader = WebUploader.create({
            pick: {
                id: '#filePicker',
                label: '点击选择图片',
            },
            formData: {
                uid: 123,
            },
            dnd: '#uploader .queueList',
            paste: '#uploader',
            swf: '../../dist/Uploader.swf',
            chunked: false,
            chunkSize: 512 * 1024,
            server: '../../server/fileupload.php',
            // runtimeOrder: 'flash',

            // accept: {
            //     title: 'Images',
            //     extensions: 'gif,jpg,jpeg,bmp,png',
            //     mimeTypes: 'image/*'
            // },

            // 禁掉全局的拖拽功能。这样不会出现图片拖进页面的时候，把图片打开。
            disableGlobalDnd: true,
            fileNumLimit: 300,
            fileSizeLimit: 200 * 1024 * 1024, // 200 M
            fileSingleSizeLimit: 50 * 1024 * 1024, // 50 M
        });

        // 拖拽时不接受 js, txt 文件。
        uploader.on('dndAccept', function(items) {
            let denied = false;
            const len = items.length;
            let i = 0;
            // 修改js类型
            const unAllowed = 'text/plain;application/javascript ';

            for (; i < len; i++) {
                // 如果在列表里面
                if (~unAllowed.indexOf(items[i].type)) {
                    denied = true;
                    break;
                }
            }

            return !denied;
        });

        uploader.on('dialogOpen', function() {
            console.log('here');
        });

        // uploader.on('filesQueued', function() {
        //     uploader.sort(function( a, b ) {
        //         if ( a.name < b.name )
        //           return -1;
        //         if ( a.name > b.name )
        //           return 1;
        //         return 0;
        //     });
        // });

        // 添加“添加文件”的按钮，
        uploader.addButton({
            id: '#filePicker2',
            label: '继续添加',
        });

        uploader.on('ready', function() {
            window.uploader = uploader;
        });

        // 当有文件添加进来时执行，负责view的创建
        function addFile(file) {
            const $li = $('<li id="' + file.id + '">' +
                    '<p class="title">' + file.name + '</p>' +
                    '<p class="imgWrap"></p>' +
                    '<p class="progress"><span></span></p>' +
                    '</li>');

            const $btns = $('<div class="file-panel">' +
                        '<span class="cancel">删除</span>' +
                        '<span class="rotateRight">向右旋转</span>' +
                        '<span class="rotateLeft">向左旋转</span></div>').appendTo($li);
            const $prgress = $li.find('p.progress span');
            const $wrap = $li.find('p.imgWrap');
            const $info = $('<p class="error"></p>');

            const showError = function(code) {
                switch (code) {
                case 'exceed_size':
                    text = '文件大小超出';
                    break;

                case 'interrupt':
                    text = '上传暂停';
                    break;

                default:
                    text = '上传失败，请重试';
                    break;
                }

                $info.text(text).appendTo($li);
            };

            if (file.getStatus() === 'invalid') {
                showError(file.statusText);
            } else {
                // @todo lazyload
                $wrap.text('预览中');
                uploader.makeThumb(file, function(error, src) {
                    let img;

                    if (error) {
                        $wrap.text('不能预览');
                        return;
                    }

                    if (isSupportBase64) {
                        img = $('<img src="' + src + '">');
                        $wrap.empty().append(img);
                    } else {
                        $.ajax('../../server/preview.php', {
                            method: 'POST',
                            data: src,
                            dataType: 'json',
                        }).done(function(response) {
                            if (response.result) {
                                img = $('<img src="' + response.result + '">');
                                $wrap.empty().append(img);
                            } else {
                                $wrap.text('预览出错');
                            }
                        });
                    }
                }, thumbnailWidth, thumbnailHeight);

                percentages[file.id] = [file.size, 0];
                file.rotation = 0;
            }

            file.on('statuschange', function(cur, prev) {
                if (prev === 'progress') {
                    $prgress.hide().width(0);
                } else if (prev === 'queued') {
                    $li.off('mouseenter mouseleave');
                    $btns.remove();
                }

                // 成功
                if (cur === 'error' || cur === 'invalid') {
                    console.log(file.statusText);
                    showError(file.statusText);
                    percentages[file.id][1] = 1;
                } else if (cur === 'interrupt') {
                    showError('interrupt');
                } else if (cur === 'queued') {
                    $info.remove();
                    $prgress.css('display', 'block');
                    percentages[file.id][1] = 0;
                } else if (cur === 'progress') {
                    $info.remove();
                    $prgress.css('display', 'block');
                } else if (cur === 'complete') {
                    $prgress.hide().width(0);
                    $li.append('<span class="success"></span>');
                }

                $li.removeClass('state-' + prev).addClass('state-' + cur);
            });

            $li.on('mouseenter', function() {
                $btns.stop().animate({height: 30});
            });

            $li.on('mouseleave', function() {
                $btns.stop().animate({height: 0});
            });

            $btns.on('click', 'span', function() {
                const index = $(this).index();
                let deg;

                switch (index) {
                case 0:
                    uploader.removeFile(file);
                    return;

                case 1:
                    file.rotation += 90;
                    break;

                case 2:
                    file.rotation -= 90;
                    break;
                }

                if (supportTransition) {
                    deg = 'rotate(' + file.rotation + 'deg)';
                    $wrap.css({
                        '-webkit-transform': deg,
                        '-mos-transform': deg,
                        '-o-transform': deg,
                        'transform': deg,
                    });
                } else {
                    $wrap.css('filter', 'progid:DXImageTransform.Microsoft.BasicImage(rotation=' + (~~((file.rotation / 90) % 4 + 4) % 4) + ')');
                    // use jquery animate to rotation
                    // $({
                    //     rotation: rotation
                    // }).animate({
                    //     rotation: file.rotation
                    // }, {
                    //     easing: 'linear',
                    //     step: function( now ) {
                    //         now = now * Math.PI / 180;

                    //         var cos = Math.cos( now ),
                    //             sin = Math.sin( now );

                    //         $wrap.css( 'filter', "progid:DXImageTransform.Microsoft.Matrix(M11=" + cos + ",M12=" + (-sin) + ",M21=" + sin + ",M22=" + cos + ",SizingMethod='auto expand')");
                    //     }
                    // });
                }
            });

            $li.appendTo($queue);
        }

        // 负责view的销毁
        function removeFile(file) {
            const $li = $('#' + file.id);

            delete percentages[file.id];
            updateTotalProgress();
            $li.off().find('.file-panel').off().end().remove();
        }

        function updateTotalProgress() {
            let loaded = 0;
            let total = 0;
            const spans = $progress.children();
            let percent;

            $.each(percentages, function(k, v) {
                total += v[0];
                loaded += v[0] * v[1];
            });

            percent = total ? loaded / total : 0;

            spans.eq(0).text(Math.round(percent * 100) + '%');
            spans.eq(1).css('width', Math.round(percent * 100) + '%');
            updateStatus();
        }

        function updateStatus() {
            let text = ''; let stats;

            if (state === 'ready') {
                text = '选中' + fileCount + '张图片，共' +
                        WebUploader.formatSize(fileSize) + '。';
            } else if (state === 'confirm') {
                stats = uploader.getStats();
                if (stats.uploadFailNum) {
                    text = '已成功上传' + stats.successNum + '张照片至XX相册，' +
                            stats.uploadFailNum + '张照片上传失败，<a class="retry" href="#">重新上传</a>失败图片或<a class="ignore" href="#">忽略</a>';
                }
            } else {
                stats = uploader.getStats();
                text = '共' + fileCount + '张（' +
                        WebUploader.formatSize(fileSize) +
                        '），已上传' + stats.successNum + '张';

                if (stats.uploadFailNum) {
                    text += '，失败' + stats.uploadFailNum + '张';
                }
            }

            $info.html(text);
        }

        function setState(val) {
            let file; let stats;

            if (val === state) {
                return;
            }

            $upload.removeClass('state-' + state);
            $upload.addClass('state-' + val);
            state = val;

            switch (state) {
            case 'pedding':
                $placeHolder.removeClass('element-invisible');
                $queue.hide();
                $statusBar.addClass('element-invisible');
                uploader.refresh();
                break;

            case 'ready':
                $placeHolder.addClass('element-invisible');
                $('#filePicker2').removeClass('element-invisible');
                $queue.show();
                $statusBar.removeClass('element-invisible');
                uploader.refresh();
                break;

            case 'uploading':
                $('#filePicker2').addClass('element-invisible');
                $progress.show();
                $upload.text('暂停上传');
                break;

            case 'paused':
                $progress.show();
                $upload.text('继续上传');
                break;

            case 'confirm':
                $progress.hide();
                $('#filePicker2').removeClass('element-invisible');
                $upload.text('开始上传');

                stats = uploader.getStats();
                if (stats.successNum && !stats.uploadFailNum) {
                    setState('finish');
                    return;
                }
                break;
            case 'finish':
                stats = uploader.getStats();
                if (stats.successNum) {
                    alert('上传成功');
                } else {
                    // 没有成功的图片，重设
                    state = 'done';
                    location.reload();
                }
                break;
            }

            updateStatus();
        }

        uploader.onUploadProgress = function(file, percentage) {
            const $li = $('#' + file.id);
            const $percent = $li.find('.progress span');

            $percent.css('width', percentage * 100 + '%');
            percentages[file.id][1] = percentage;
            updateTotalProgress();
        };

        uploader.onFileQueued = function(file) {
            fileCount++;
            fileSize += file.size;

            if (fileCount === 1) {
                $placeHolder.addClass('element-invisible');
                $statusBar.show();
            }

            addFile(file);
            setState('ready');
            updateTotalProgress();
        };

        uploader.onFileDequeued = function(file) {
            fileCount--;
            fileSize -= file.size;

            if (!fileCount) {
                setState('pedding');
            }

            removeFile(file);
            updateTotalProgress();
        };

        uploader.on('all', function(type) {
            let stats;
            switch (type) {
            case 'uploadFinished':
                setState('confirm');
                break;

            case 'startUpload':
                setState('uploading');
                break;

            case 'stopUpload':
                setState('paused');
                break;
            }
        });

        uploader.onError = function(code) {
            alert('Eroor: ' + code);
        };

        $upload.on('click', function() {
            if ($(this).hasClass('disabled')) {
                return false;
            }

            if (state === 'ready') {
                uploader.upload();
            } else if (state === 'paused') {
                uploader.upload();
            } else if (state === 'uploading') {
                uploader.stop();
            }
        });

        $info.on('click', '.retry', function() {
            uploader.retry();
        });

        $info.on('click', '.ignore', function() {
            alert('todo');
        });

        $upload.addClass('state-' + state);
        updateTotalProgress();
    });
})(jQuery);

</script>

</body>